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Falling back to partial UNION if large dump connects out

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This commit is contained in:
Miroslav Stampar 2014-10-21 09:23:34 +02:00
parent 1b18035eb3
commit 3ebc5faa34
1 changed files with 10 additions and 2 deletions
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12
lib/request/inject.py
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@ -38,6 +38,7 @@ from lib.core.enums import CHARSET_TYPE
from lib.core.enums import DBMS
from lib.core.enums import EXPECTED
from lib.core.enums import PAYLOAD
from lib.core.exception import SqlmapConnectionException
from lib.core.exception import SqlmapNotVulnerableException
from lib.core.exception import SqlmapUserQuitException
from lib.core.settings import MAX_TECHNIQUES_PER_VALUE
@ -371,11 +372,18 @@ def getValue(expression, blind=True, union=True, error=True, time=True, fromUser
if union and isTechniqueAvailable(PAYLOAD.TECHNIQUE.UNION):
kb.technique = PAYLOAD.TECHNIQUE.UNION
kb.forcePartialUnion = kb.injection.data[PAYLOAD.TECHNIQUE.UNION].vector[8]
value = _goUnion(forgeCaseExpression if expected == EXPECTED.BOOL else query, unpack, dump)
fallback = not expected and kb.injection.data[PAYLOAD.TECHNIQUE.UNION].where == PAYLOAD.WHERE.ORIGINAL and not kb.forcePartialUnion
try:
value = _goUnion(forgeCaseExpression if expected == EXPECTED.BOOL else query, unpack, dump)
except SqlmapConnectionException:
if not fallback:
raise
count += 1
found = (value is not None) or (value is None and expectingNone) or count >= MAX_TECHNIQUES_PER_VALUE
if not found and not expected and kb.injection.data[PAYLOAD.TECHNIQUE.UNION].where == PAYLOAD.WHERE.ORIGINAL and not kb.forcePartialUnion:
if not found and fallback:
warnMsg = "something went wrong with full UNION "
warnMsg += "technique (could be because of "
warnMsg += "limitation on retrieved number of entries)"